/*
 * 	Easy Slider 1.5 - jQuery plugin
 *	written by Alen Grakalic	
 *	http://cssglobe.com/post/4004/easy-slider-15-the-easiest-jquery-plugin-for-sliding
 *
 *	Copyright (c) 2009 Alen Grakalic (http://cssglobe.com)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *
 *	Built for jQuery library
 *	http://jquery.com
 */


(function ($) {

    $.fn.Slider = function (options) {

        // default configuration properties
        var defaults = {
            prevId: 'prevBtn',
            nextId: 'nextBtn',
            controlsShow: true,
            controlsBefore: '',
            controlsAfter: '',
            controlsFade: true,
            vertical: false,
            speed: 800,
            auto: false,
            pause: 2000,
            continuous: false,
            offbtn: '',
            offline: 1,
            shownum: 0
        };

        var options = $.extend(defaults, options);

        this.each(function () {
            var line = options.offline;
            var obj = $(this);
            var s = $("li", obj).length;
            var w = $("li", obj).width();
            var h = $("li", obj).height();
            var ts = s % line;
            if (ts != 0) {
                ts = parseInt((s / line));

            }
            else {
                ts = parseInt((s / line)) - 1;
            }
            var t = 0;
            if (!options.vertical)$("ul", obj).css('width', s * w);


            $(options.nextId).click(function () {
                animate("next", true);
            });
            $(options.prevId).click(function () {
                animate("prev", true);
            });

            function animate(dir, clicked) {
                var ot = t;
                switch (dir) {
                    case "next":
                        t = (ot >= ts) ? (options.continuous ? 0 : ts) : t + 1;
                        break;
                    case "prev":
                        t = (t <= 0) ? (options.continuous ? ts : 0) : t - 1;
                        break;
                    case "first":
                        t = 0;
                        break;
                    case "last":
                        t = ts;
                        break;
                    default:
                        break;
                }
                ;

                var diff = Math.abs(ot - t);
                var speed = diff * options.speed;
                if (!options.vertical) {
                    p = (t * w * -1);
                    $("ul", obj).animate(
                        { marginLeft: line * p },
                        speed
                    );
                } else {
                    p = (t * h * -1);
                    $("ul", obj).animate(
                        { marginTop: line * p },
                        speed
                    );
                }
                ;

                if (!options.continuous && options.controlsFade) {
                    //alert(t+"|"+ts);
                    if (t == ts) {
                        $(options.nextId).addClass(options.offbtn);
                    } else {
                        $(options.nextId).removeClass(options.offbtn);
                    }
                    ;
                    if (t == 0) {
                        $(options.prevId).addClass(options.offbtn);
                    } else {
                        $(options.prevId).removeClass(options.offbtn);
                    }
                    ;
                }
                ;

                if (clicked) clearTimeout(timeout);
                if (options.auto && dir == "next" && !clicked) {
                    ;
                    timeout = setTimeout(function () {
                        animate("next", false);
                    }, diff * options.speed + options.pause);
                }
                ;

            };
            // init
            var timeout;
            if (options.auto) {
                ;
                timeout = setTimeout(function () {
                    animate("next", false);
                }, options.pause);
            }
            ;

            if (!options.continuous && options.controlsFade) {
                $(options.prevId).addClass(options.offbtn);
            }
            ;

        });

    };

})(jQuery);